Cong Nghe Sach Giao Duc Ha-Book Joint Stock Company Address: Dai Dong Hamlet, Dai Mach Commune, Dong Anh District, Ha Noi City Enterprise code: 0109751928 Phone: 02033375300 Representative: Pham Van Hai Dai Mach Commune, Dong Anh District, Ha Noi CityFounding date: 22 - 9 - 2021